OS 91 Surpass Engine Featured Engine: OS 91 Surpass

Four stroke engines tickle the fancy of many of us because they are simply “neat.” Their sound stirs the imagination, and they carry the airplane around the sky in a more realistic fashon. But they are expensive. A lot of money can be saved by buying used RC engines, if you can find a dependable used engine. I try to make all of my used engines relaible through repair, testing, and rating so you will know what you are getting before you buy.

BRAND SIZE RATING PRICE SKU DESCRIPTION
Magnum XL 91 7 $135 115  
Magnum XL 91 8 $150 116 Has every bit as much “pinch” as an OS 91
Magnum XL 91 9 $165 114  
OS Surpass 26 8 $130 166  
OS Surpass 48 7 $105 16  
OS Surpass II 52 7 $125 164  
OS Surpass 70 8 $165 192  
OS Surpass 70 7 $145 193  
OS Surpass 91 9 $200 179 Bench run once for about 2 min.
OS Surpass 91 7 $175 176  
OS Surpass II 91 8 $185 86  
OS Surpass 120 8 $215 204  
OS Surpass III 120 8 $225 208 Has the pump
Saito 65 7 $140 161  
Saito 72 7 $150 171  
Saito 80 7 $160 163  
Saito 91 8 $185 148  
Saito 91 7 $160 153  
Saito 91 8 $180 154 Muffler older than engine.
Saito 100 7 $180 172  
YS FZ 91 7 $175 162 Impressive engine.
YS AC 110 8 $200 170  
YS AC 120 7 $195 238  
YS FS 120 7 $200 243 Stack Exhaust
YS SF 120 7 $210 244 Bulb muffler
YS SF 120 8 $215 246  
YS SF 120 7 $205 205 Muffler and 45 degree header
YS FS 120 8 $215 251 Bulb shapped muffler
YS FS 120 7+ $210 239  
YS FZ 120 7 $205 206 Bulb muffler
YS NC 120 7 $205 237 90 header plus a muffler
YS Sport 140 8 $260 213 Wrap around muffler with smoke capabilities.